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网络申请第三方AFNetwoking_网络申请

Posted on Jun 11, 2015 By anchoriteFili

相关链接

快速创建
// get
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager]; 

[manager GET:URL parameters:nil progress:^(NSProgress * _Nonnull downloadProgress) {  

}     
 success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {  

 NSLog(@"这里打印请求成功要做的事");  

}

failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull   error) {  

NSLog(@"%@",error);  //这里打印错误信息

}];

// post 
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];


NSMutableDictionary *parameters = @{@"":@"",@"":@""};

[manager POST:URL parameters:parameters progress:^(NSProgress * _Nonnull uploadProgress) {


} success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {


} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {

}];

暂停按钮的实现

#pragma mark 暂停按钮点击事件
- (void)stopBtnClick:(UIButton *)sender {
    NSLog(@"book = %@",self.namelabel.text);
    
    if (!self.isDownloading) {
        [sender setTitle:@"暂停" forState:UIControlStateNormal];
        self.isDownloading = YES;
        
        AFHTTPRequestOperation *operation = [[[NSOperationQueue currentQueue] operations] objectAtIndex:0];
//        只对一个操作暂停即可完成全部暂停
        [operation pause];
        
    }else {
        [sender setTitle:@"下载" forState:UIControlStateNormal];
        self.isDownloading = NO;
        
        AFHTTPRequestOperation *operation = [[[NSOperationQueue currentQueue] operations] objectAtIndex:0];
//        继续下载操作
        [operation resume];
        
    }
}

对AFNetWorking进行改造才可以从网上申请text文件的JSON数据

self.acceptableContentTypes = [NSSet setWithObjects:@”application/json”, @”text/json”, @”text/javascript”, nil];

self.acceptableContentTypes = [NSSet setWithObjects:@”application/json”,@"text/html", @”text/json”, @”text/javascript”, nil];

参数parameters的作用：在请求序列化中在网址后边加一些请求字符串或HTTP Body

NSString *URLString = @"http://example.com";
NSDictionary *parameters = @{@"foo": @"bar",@"baz": @[@1,@2,@3]};

[[AFHTTPRequestSerializer serializer] requestWithMethod:@"GET" URLString:URLString parameters:parameters error:nil];